THERMOPLASTIC ELASTOMER COMPOSITION, POWDER, PELLETS, AND MOLDINGS

WIPO Patent Application WO/1999/029775

A1

A thermoplastic elastomer composition comprising the following components (A), (B-1) and (B-2), wherein the total content of the components (B-1) and (B-2) is 10 to 250 parts by weight per 100 parts by weight of the component (A) and the complex dynamic viscosity $g(h)?*¿(1) at 250 °C is 1.5 x 10?5¿ P or below while the Newtonian viscosity index (n) is 0.67 or below; and pellets and moldings made from the composition: (A) a polyolefin resin, (B-1) an optionally hydrogenated conjugated diene rubbery polymer which exhibits two tan $g(d) peaks in the temperature range of -70 to 30 °C in the tan $g(d) temperature dependence curve as determined by the solid viscoelasticity measurement of the composition prepared by kneading this rubbery polymer and the resin (A), and (B-2) an optionally hydrogenated conjugated diene rubbery polymer which exhibits a single tan $g(d) peak at a temperature which falls within the range of -70 to 30 °C and is different from the tan $g(d) peak temperatures of the components (A) and (B-1) in the tan $g(d) temperature dependence curve as determined by the solid viscoelasticity measurement of the composition prepared by kneading this rubbery polymer and the resin (A).

SUGIMOTO HIROYUKI (JP)
NAKATSUJI YOSHIHIRO (JP)
EJIRI SUSUMU (JP)

PCT/JP1998/005563

June 17, 1999

December 09, 1998

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SUMITOMO CHEMICAL CO (JP)
SUGIMOTO HIROYUKI (JP)
NAKATSUJI YOSHIHIRO (JP)
EJIRI SUSUMU (JP)

C08L15/00; C08L23/02; C08L23/10; C08L23/08; C08L53/00; (IPC1-7): C08L23/02; B32B25/08; C08J3/12; C08J5/00; C08L9/00

JPH05287136A	1993-11-02
JPH08199009A	1996-08-06
JPS62172043A	1987-07-29

Jinno, Naoyoshi (Limited 5-33, Kitahama 4-chome Chuo-ku Osaka-shi Osaka, JP)

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